Expanding shaft.



PATENTED 001'. 25, 1904.

M. POWER. EXPANDING SHAP'L APPLICATION FILED NOV. 2, 1903.

N0 MODEL.

6 7; V lryzegfm'.

UNITED STATES Patented October 25,1904.

PATENT ()FFICE.

EXPANDING SHAFT.

SPECIFICATION forming part of Letters Patent No. 773,223, dated October 25, 1904.

Application filed November 2, 1903. Serial No. 179,591. (No model.)

' specification.

This invention relates to an expansible shaft, and more particularly to a shaft especially designed for winding and unwinding rolls of paper, cloth, and similar material.

The object of the invention is to provide an inexpensive, durable, and efficient device of this character capable of being expanded and contracted laterally, so as to permit the shaft to be quickly removed from the roll prior to shipping or transporting the same.

The invention consists in the construction and novel combination and arrangement of parts hereinafter fully described, illustrated in the accompanying drawings, and pointed out in the claims hereto appended, it being understood that various changes in form, proportion, and minor details of construction may be resorted to without departing from the principle or sacrificing any of the advantages of this invention.

In the accompanying drawings, forming a part of this specification, Figure 1 is a side elevation of a shaft or spindle constructed in accordance with my invention, showing the same attached to the roll. Fig. 2 is a longitudinal sectional elevation of the same. Fig. 3 is a transverse sectional view. Fig. 1 is a perspective view of a portion of the movable section of the shaft. Fig. 5 is a perspective View of a portion of the movable operatingarm and its threaded bolt detached, and Fig. 6 is a perspective view of the adjusting-nut and its supporting-sleeve detached.

Similar numerals of reference indicate corresponding parts in all the figures of the drawings.

The device consists of a main shaft or spindle provided with journals l0 and 11 and having its intermediate portion split or divided longitudinally to form a stationary section 12 and a movable section 13,'the latter section extending between the journals and 11, as shown. The contiguous faces of the shaft-sections 12 and 13 are formed with longitudinal grooves or channels 14 and 15, respectively, the section 13 being also provided with a series of spaced transversely-disposed recesses 16, which communicate with the channel 15 and are preferably inclined to the longitudinal plane of the shaft, as shown.

Mounted for longitudinal movement in the channels 14 and 15 is a bar-17, provided with laterally-extending arms 18, the inclined or beveled faces of which engage the correspondingly-inclined walls of the recesses 16 and move the section 13 laterally with respect to the stationary section 12 when said bar is adjusted longitudinally, as will be readily understood.

The shaft-sections 12 and 13 are provided at suitable invervals with guide-pins 19, threaded or otherwise permanently secured to one of said sections and having their enlarged heads 20 fitting in recesses or cavities 21 in the opposite section, as shown, so as to permit the movable section to expand or contract without liability of becoming accidentally detached from the shaft. The pins 19 are preferably of such length and the recesses 21 of such depth that the heads 20 will at no time project beyond the general surface of the shaft-sections.

Means are provided for forcibly adjusting the bar 17 longitudinally of the shaft to produce the requisite expansion of the section 18, and this means consists of an externallythreaded sleeve 22, which engages the interior threads of a socket 23, formed in the end of the journal 11 and communicating with the channel 14, as shown. The sleeve 22 is provided with a lateral slot or opening 24 for the reception of a nut 25, said nut being free to rotate within the sleeve 22 and provided with spaced flanges 26 and 27, which bear against the opposite ends of said sleeve, as shown. By this arrangement it is obvious the nut is free to rotate in the sleeve, and the latter may be adjusted longitudinally of the journal 11 by merely rotating the same to provide ready means for adjusting the nut relative to the shaft. Engaging the nut is a threaded rod 28, connected at its inner end, as by a pin 29, to the adjacent end of the bar 17. The sleeve 22 and nut 25 are provided, respectively, with squared outer portions 30 and 31, adapted to receive an operatingwrench.

From the foregoing description it will be understood that when the shaft is inserted in the roll 32 and a wrench applied to the nut 25 to rotate it in one direction the bar 17, with its laterally-extending arms 18, will be forced in contact with the correspondingly-inclined faces of the recesses 16 and cause the movable section 13 to tightly engage the interior of the roll, and thus connect the shaft there to. When the shaft is to be removed from the roll, a few turns of the nut in. the opposite direction will permit the same to be readily released.

The shaft or spindle is extremely simple in construction and may be readily adapted to all purposes for which expanding shafts are required.

Having thus described the invention, what is claimed is- 1. In a device of the class described,a shaft formed of stationary and movable sections having longitudinal channels formed in their contiguous faces, one of said sections being provided with transversely-disposed inclined recesses, a bar mounted for longitudinal movement in said channels and provided with laterally-extending inclined arms adapted to engage said recesses, and means for adjusting the bar longitudinally of the shaft.

21 In a device of the class described, a shaft formed of stationary and movable sections having longitudinal channels formed in their contiguous faces, the movable section being provided with transverse]y-disposed inclined recesses communicating with both channels, a bar mounted for longitudinal movement in said channels and provided with laterally-extending inclined arms adapted to engage the recesses in the movable section, and means for adjusting the bar longitudinally of the shaft.

In a device of the class described, a shaft formed of stationary and movable sections having longitudinal channels formed in their contiguous faces, one of said sections being provided with transversely-disposed recesses spaced apart and inclined to the longitudinal plane of the shaft, a bar mounted for longitudinal movement in said channels and provided with laterally-extending inclined arms adapted to engage said recesses, guide-pins extending through both sections, and means for adjusting the bar longitudinally of the shaft.

I. In a device of the class described, a shaft formed of stationary and movable sections having longitudinal channels formed in their contiguous faces, the stationary section being provided with journals and the movable section with transversely disposed recesses spaced apart and inclined to the longitudinal plane of the shaft, a bar mounted for longitudinal movement in said channels and provided with laterally-extending arms having flat lower faces adapted to engage the stationary section and inclined upper faces for engagement with the recesses in the movable section, and means for adjusting the bar longitudinally of the shaft.

5. In a device of the class described, a shaft formed of stationary and movable sections having longitudinal channels formed in their contiguous faces, one of said sections being extended to form journals and provided with a terminal socket communicating with said channels, and the opposite section provided with transversely-disposed inclined recesses, a bar provided with terminal threads mounted for longitudinal movement in said channels and having laterally-extending inclined arms for engagement with the transverse recesses, an annular plug engaging the socket in the journal, and a nut mounted for rotation therein and engaging the terminal threads of said bar.

6. In a device of the class described, a shaft formed of stationary and movable sections l'laving longitudinal channels formed in their contiguous faces, one of said sections being extended to form journals and provided with a terminal threaded socket communicating with said channels, and the opposite section provided with transversely-disposed recesses spaced apart and inclined to the longitudinal plane of the shaft, a bar mounted for longitudinal movement in said channels and having lateral inclined arms for engagement with the transverse recesses, a threaded sleeve engaging the socket in the journal, a nut mounted for rotation in said sleeve, and a threaded rod engaging said nut and connected to said bar.

7. In a device of the class described, a shaft formed of stationary and movable sections having longitudinal channels formed in their contiguous faces, one of said sections being extended to form journals and provided with a terminal threaded socket comn'mnicating with said channels, and the opposite section provided with transversely-disposed recesses spaced apart and inclined to the longitudinal plane of the shaft, a bar mounted for longitudinal movement in said channels and having lateral inclined arms for engagement with the transverse recesses, a threaded sleeve for engagement with the socket and having a lateral opening communicating with its interior, a nut having a bearing for rotative engagement with said sleeve and provided with spaced flanges bearing against the opposite ends of said sleeve, and a threaded rod engaging the nut and connected to said bar.

In testimony thatI claim the foregoing as my own I have hereto aiiixed my signature in the presence of two witnesses.

MICHAEL POIVER. \Vitness es:

L. G. PUTNEY, FRED J. FLANAGAN. 

